11.   Because most of the sea bottom off coastal Georgia is barren sand that provides little shelter for sea creatures, the state builds and maintains artificial reefs.

12.   During the experiment in the closed area, scallopers also caught flounder and other groundfish as they pulled their scallop dredges along the sea bottom.

13.   For instance, in Aquamarine Bay, the tide on the seaward side is so strong that plants lie parallel to the sea bottom.

14.   Four scallop dredging boats picked up where they left off in mid-December, raking a vast swath of the sea bottom south of Long Island, looking for clues.

15.   He demonstrated that large swaths of it are swept by strong currents and benthic, or sea bottom, storms.

16.   He had also run the yacht aground several times, immersing the all-important ballast bulb in mucky sea bottoms before leaving on his voyage.

17.   In Cyprus, they learned that a sponge diver had found an intriguing pile of wine jars on the sea bottom.

18.   It could be the remains of either algae that settled on an ancient sea bottom or oil that shot through a crack underground.

19.   Just as important, certain types of sea bottom serve as nurseries for the next generation.

20.   Mussels live either partly buried in the sea bottom or attached to rocky surfaces by means of threads.